Valve stem stability in pressurized dispensing containers

Details Valve stem stability in pressurized dispensing containers Valve stem stability in pressurized dispensing containers

2007-05-29

2007-05-29

Nicolas, Frederick C. (Department: 3754)

Dispensing

With discharge assistant

Fluid pressure

C222S402150, C222S402130, C222S402220

Reexamination Certificate

active

11018278

ABSTRACT:
A standard stem and nozzle arrangement for a pressurized dispensing container which dispenses product such as caulk, has an engagement that holds the stem to the sealing boot so that when the nozzle is rotated, the stem will stay in place. Thus, any binding between nozzle and stem due to cured or dried dispensed product can be overcome by twisting the nozzle hard enough to break such a seal without causing the stem to rotate. The engagement is shown as a set of wedge-like projections that extend up from the button of the stem into the resilient sealing boot.

REFERENCES:
patent: 2914224 (1959-11-01), Michel
patent: 3506241 (1970-04-01), Ewald
patent: 3735955 (1973-05-01), Kerr et al.
patent: 4436229 (1984-03-01), Beard
patent: 4450985 (1984-05-01), Beard
patent: 4550865 (1985-11-01), Hirao et al.
patent: 6637627 (2003-10-01), Liljeqvist et al.
patent: 6874663 (2005-04-01), Scheindel

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